Knob



March 31. 1931. w. D. FERRIS 1,798,409

KNOB

Filed Nov. 8. 1929 Patented Mar. 31, 1931 UNITED STATES PATE NT "OFF-ICE WILLIAM D. FERRIS, OF STERLING, ILLINOIS,[ASSIGNOR TO FRANTZ MAN UFAGTUBING 00., OF STERLING, ILLINOIS, A CORPORATION OF ILLINOIS KNOB Application filed November 8, 1929. Serial No. 405,589.

This invention relates to knobs, such as the glass or porcelain or other similar knobs employed on cabinets or cupboards, such as bathroom cabinets.

Generally stated, the object of the invention is to provide a novel and improved construction for connecting the glass knob, or the knob made of some similar or other suitable material, to the screw or bolt by which lathe knob is fastened to the door of a cupboard or cabinet, thereby to insure against detachment of the knob from said screw or bolt, while permitting a tight clamping of the knob against the outer side of the door, by the tightening of the nut on the inner end portion of the said screw or bolt, and insuring against any loosening of the knob in its retaining socket on the head of the said screw or bolt.

It is also an object to provide certain details and features of construction tending to increase the general efficiency and the desirability of a door or handle of this particular character.

To the foregoing and other useful ends, the invention consists in matters hereinafter set forth and claimed and shown in the accompanying drawings, in which- Fig. 1 is a side elevation of a door knob or handle involving the principles of the invention, showing the adjacent portion of the door in section;

Fig. 2 is a View, on a larger scale, of the different parts of the said knob and its retaining screw or bolt, in separated condition, showing the socket piece thereof in section; and

Fig. 3 is a view of the parts shown in Fig. 2, in assembled relation, showing the knob and the socket piece in longitudinal section, but showing the screw or bolt in side elevation.

Fig. 4 is an end elevation of the knob, looking toward its base or attaching portion, before the knob is fastened in its metal socket.

As thus illustrated, the invention comprises a bolt 1 having a comparatively flat head 2, and having a squared portion 3 adjacent said head. A nut and washer 4 are secured upon the inner end portion of the bolt, thereby'to clamp the socket piece 5 of the knob 6 firm- 1y against the outer side of the door 7 in the manner shown.

The knob 6 may be of glass or other'suitable material, and is preferably formed with .a base portion Shaving peripheral ribs 9 formed thereon, as shown. The base portion is provided with a depression or shallow socket 10 having radial ribs 11 formed thereon, as shown. A sheet of metal foil 12 is placed in the socket or depression .10, and a rubber disk 13 is placed against'the metal foil, and the assembly thus shown is held together by the sheet metal socket piece 14, which latter has a square central hole v15, fitting the square portion 3 of the bolt.

The cup-shapedsocketpiece 14 is first cylindrical, as'shown in Fig. 2-ofthedrawings, but is spun over at 16 toengagethe shoulder 17 of the knob, thus pressing the disks 12 and 13 into the condition shown in Fig, 3 of the drawings, between the head 2 and the socket 10, thus tightly securingthe knob in the socket piece. The engagement of the walls ofthe cup 14 with the ribs 9 serves to prevent turning or twisting of the knob in the socket piece, and-this is further prevented by the small indentations 18, formed in the bottom wall of the cup 14, when the latter is crimped or swaged tightly into position on the knob, these indentations providing inside projections that engage the rub- .ber disk 13 in the mannershown.

:Themetal foil 12, if the knob 6 be of clear glass, or even of translucent glass, attracts the light and gives the knob an attractive appearance. The ribs 11 assist in preventing relative rotation between-the knob and the retaining bolt, the disks 12 and 13 being pressed tightly against these ribs when the cup-shaped socket piece 14 is forced into po- I of frangible material, the knob being cush- CPL ioned, more or less, in its socket by the rubber disk 13 interposed between the knob and the bottom of the socket or cup 14, which serves as the medium of connection between the knob and the retaining screw or bolt.

What I claim as my invention is 1. In a door knob or similar handle, the combination of a sheet metal cup forming a socket piece, a knob held in said socket piece by the inwardly bent rim portion of the cup-like socket piece, said socket piece having a polygonal central opening in the bottom wall thereof, a bolt having a polygonal portion held in said opening, said bolt having a head integral with said polygonal I portion, which head is interposed between the base of the knob and the said bottom wall of the socket piece, preventing separation of the bolt from the socket piece, said bolt having a threaded shank portion.

2. A structure as specified in claim 1, comprising cushioning means interposed between said bolt-head and the base of said knob,

directly engaging said bolt-head, providing a resilient cushion between the base of the knob and the bottom wall of the socket piece, cushioning the joint between the knob an the socket piece.

3. A structure as specified in claim 1, said knob having its base at the maximum diameter thereof formed with peripheral projeotions engaging the side walls of said socket piece.

.LLA structure as specified, in claim 1, said knob having its base formed with a shallow depression the surface of which is rough, and packing means interposed between the bolt-head and said rough surface, directly engaging said bolt-head, and between the knob base and the bottom Wall of the socket piece, cushioning the joint between the knob and the socket piece.

5. A structure as specified in claim 1, there being resilient packing interposed between the knob base and the bottom wall of the socket piece, said bottom wall having indentations forming inside projections engaging said resilient packing means. 7

Specification signed this 5th day of November, 1929. c

WILLIAM D. FERRIS. 

